Dual or combination range



Dec. 20, 1938- F. H SCHNEIDER E AL DUAL OR COMBINATION RANGE Filed Nov.6, 1937 INVENTOR M BY WW Q W WW ATTORNEY Patented Uec. 2Q, 1938 attachDUAL on COMBINATION RANGE Frank H. Schneider, Royersford, and DominickSaponara, Spring City, Pan, assignors to The Floyd-Wells Company,Royersford, Pa., a corporation of Pennsylvania,

Application November 6, 1937, Serial No. 173,243

4 Claims.

Our invention relates to dual or combination ranges and the like.

The principal object of the invention is to provide an economical andhighly efficient dual range construction.

A further object of the invention is to provide a novel centrallydisposed burner and divided oven flue arrangement whereby heat can beevenly distributed to both sides of the oven.

Another object of the invention is to provide a dual range in which theamount of heat to be distributed to one or both sides of the oven can beconveniently regulated.

Another object of the invention is to eliminate the use of a bafiieplate, thus simplifying changing from one fuel to another, simultaneoususe of both coal or oil and gas not being possible where a bafiie plateis employed. T

A still further object of the invention is the elimination of cold spotsin the oven adjacent the oven burner.

Other objects and advantages of the invention will be understood as thedescription is considered in connection with the accompanying drawing,

in which:

Figure l is a front perspective view of a range embodying our invention;

Figure 2 is a fragmentary sectional View showing the construction of theoven heating tubes;

Figure 3 is a fragmentary bottom plan view showing the inlet openings inthe beveled adjacent ends of the tubes 28 and 29;

Figure 4 is a section on the line 4-4 of Figure 3; and

Figure 5 is a section taken on the line 55 of Figure 2.

Referring more particularly to the drawing l designates generally a dualor combination range of conventional construction comprising rear andside walls 2, 3 and 4 respectively, a. cooking top 5 and bottom 6. Therange is provided with the usual top gas burners, not shown, arrangedwithin a gas burner chamber or compartment 1, beneath the burneropenings 8 in the top wall 5, conventional grids 9 being rested in theseopenings.

A fire box or combustion chamber l0, adapted for use of oil or coal fuelis arranged at the left side of the range and adjacent one side wall Hof an oven [2, in communication with a sheet flue l3 or space whichextends between the bottom wall M of gas burner compartment 1 and thetop Wall i5 of oven 12. This top flue space also continues down theother side iii of the oven and communicates through an opening II, inwall It, with a bottom flue i8 extending from front to rear beneath theright hand side of the oven bottom wall 23. The back wall 2 of the rangealso serves as the back Wall of the oven. The side wall H of the oven isspaced from the inner side wall IQ of the fire box to provide a divingflue 20, which communicates at its upper open end with the fire box andat its lower end with an opening 2i, leading to a bottom flue 22, inturn extending beneath the left side of the oven bottom wall 23.

A preferably elongated oven gas burner 13 is mounted within a housing25, centrally positioned beneath the bottom wall 23 of the oven andextending from front to rear thereof.- The oven bottom wall 23 ispreferably made in two closely fitting sealed sections 26 and 27, and onthe under face of these sections are integrally cast a plurality oftransversely extending tubes 28 and 29, of substantially rectangularcross section, for the left and right sidesof the oven respectively.Secondary air is introduced to the housing 24 in any desired manner asthrough openings 50 in front plate 5i. The gas burner 43, which is of alength approximating the depth of the oven, gets its primary air from amixing tube 30, in turn connected by means of pipe 3|,

with a gas supply manifold not shown. Gas is jetted from diverging gasorifices 32, formed throughout the length of the burner, toward theopposed open inner ends of the tubes 28 and 29. When the jets arelighted in a conventional manner, not shown, the hot gases enter thetubes and pass laterally to and out through openings 33 in the outerends of the tubes into the oven and thence out through flue openings 34,in the upper central portion of rear oven wall 2, which communicate withthe smoke box 35. The ends of the tubes 23 and 29 are beveled tofacilitate entrance of the hot products of combustion from the gasburner and also to'facilitate heating of the tubes at this point by thehot gases from the fire box 24, as will presently be explained. Aremovable plate 36 covering the bottom of the housing permits of easyaccess for removal or repair.

While we have illustrated and described the bottom wall of the even asbeing made in two closely interfitting sections, for some reasons, it isdesirable to cast the bottom plate or wall 23 of the oven in one piecewith the two sets of tubes 28 and 29 and the side walls, of the oven gasburner. housing, and the latter may 'also be integrally cast to thebottom face thereof.

The hot gases from fire box ID, in which, as

previously explained, coal, oil or other fuel may be used. passdownwardly through the diving flue 20, and out through opening 2i intothe bottom flue 22, where it heats the tubes 28 before passing through apreferably damper controlled opening 44 at the rear of the bottom flue22. The coal or fire box gases from the diving flue thus contact thetubes exteriorly while these gases retain a maximum of heat. A portionof the coal gases also passes through sheet flue I3 across the top ofthe oven and thence down the right side thereof to opening l1, leadingto bottom flue [8 for that side of the oven. A damper controlled opening45 at the rear of the bottom flue l8 affords an exit for this portion ofthe coal gases. Both openings 44 and 45 communicate with the maindischargefiue or smoke box 35.

It will be noted that there is no intermingling of the diiierent gases,that is the coal gases do not enter the tubes, whereas the hot gasesgenerated by the gas burner 43 pass through the tubes. By bringing theadjacent ends of the tubes 28 and 29 to a bevel, the entrance of hotgases from the housing 24 is facilitated, and'the area at the end of thetubes, not contacted by the fire box heat is reduced to a minimum, thuseliminating the liability of a cold spot at the center of the oven.

While the openings 44 and 45 are provided with dampers 46 and 41 forregulating the volume of hot gases to be passed through the bottom fluesI8 and 22, these dampers may be dispensed with and good results obtainedby making the openings of proper relative sizes to each other and to theheating eificiency ofone side of the range with respect to the other.Thus the opening 45 in the right'side of the range will preferably belarger than the opening 44 in the left side. Obviously, where dampersare employed the housewife is able; by appropriate adjustment of thedampers, to secure a uniform temperature of desired degree throughoutthe entire oven or can at will increase or decrease the temperature atone side, or the other.

It will be understood that the range can be operated with oil or coalalone, gas individually or simultaneously with coal or oil and gas.

Having thus described our invention what we claim is:

1. A range comprising a fire box having a source of heat therein, anoven, separate bottom 'flues beneath opposite sides of the oven, a maindischarge flue at the rear of the range into which said oven and ovenbottom flues discharge, a vertical flue extending down one side of theoven and leading from said fire box to one of said bottom flues, top andside flues extending from the fire box across the top and down the otherside of the oven to the other of said bottom flues, a housing sealedfrom oven and from said bottom flues and extending from front to rear ofthe oven and beneath the same, an elongated gas burner in said housingand tubes extending transversely of said burner and oven bottom andopening at opposite ends to said housing and said bottom fluesrespectively.

2. A range comprising a fire box having a source of heat therein, anoven having separate non-communicating bottom flues for opposite sidesthereof and separate discharge exits leading from the interior of saidoven and from each of said bottom flues, a top and side fluecommunicating at opposite ends with said fire box and one of said bottomflues respectively for conducting hot gases from the fire box to saidbottom flue, a diving flue communicating with said fire box and theother of said bottom flues for conducting hot gases from said fire boxto said last mentioned bottom flue, a centrally disposed chamberextending beneath said oven and between adjacent sides of said ovenflues, a gas burner in said chamber, and means placing the interior ofsaid oven in communication with said chamber. 1

3. A range comprising a fire box having a source of heat therein, anoven having separate non-communicating bottom flues for opposite sidesthereof and separate discharge exits leading from the interior of saidoven and from each of said bottom flues, a top and side fiuecommunicating at opposite ends with said flrebox and one of said bottomflues respectively for conducting hot gases from the fire box to saidbottom flue, a diving flue communicating with said fire box and theother of said bottom flues for conducting hot gases from said flre boxto said last mentioned bottom flue, a centrally disposed chamberextending beneath said oven and between adjacent sides of saidovenfiues, a gas burner in said chamber, and means integral with the bottomof said oven for passing hot gases from said chamber transversely ofsaid oven bottom and thence upwardly into the interior of said oven.

4. A range comprising a fire box having a source of heat therefor, anoven having a bottom wall, separate spaced oven flues beneath oppositesides of the oven bottom, a main discharge flue communicating with theinterior of the oven and with said bottom flues, a flue extendingdownwardly from the fire box to one of said bottom flues, and a fiueextending from the fire box across the top and down one side of the ovento the other of said bottom flues for passing products of combustionfrom said fire box to said bottom flues, a housing between said bottomflues, a gas burner in said housing, a series of tubes on each side ofthe bottom face of the oven bottom extending inwardly toward each otherand into the said housing, said tubes being beveled at their inneradjacent ends to facilitate flow of hot gases from the housing andopening at their outer ends into said oven.

FRANK H. SCHNEIDER. DOMINICK SAPONARA.

